Suna Keskin received her academic education from the Graphic Department of the State Academy of Fine Arts. She joined the Academy Theater as an amateur. Here, she started acting in theater as an amateur. Later, with the encouragement of Haldun Dormen, she started "professional theater". In 1963, she became a professional actress with the plays 'Montserrah' and 'Şahane Züğürtler' at Dormen Theater. Her husband, Erol Keskin, was also an academy graduate. He was working as a director at the Academy Theater. She met him there. She worked with Haldun Dormen for years. Later, with the first closing of the Dormen Theater in those years, everyone parted ways. Together with Erol Günaydın, Erol Keskin, Hadi Çaman, Tuncel Kurtiz, he founded the Gen-Ar Theater. They worked together for two years. They performed many plays in this theater. Among the plays they performed were plays such as The Girl in My Soup and The Passenger. In the following years, she worked with Gülriz Sururi-Engin Cezzar Theater and then with Pekcan Koşar. For 15 years she worked with Enis Fosforoğlu. He acted in all the plays of this troupe. Throughout his theater life, he acted in nearly 50 plays. From 2004 until the death of Hadi Çaman, he worked with Hadi Çaman Theater. In the 2008/2009 season, he started working with Tiyatrokare.

Apart from the theater, he played in 8 Cinema films.

In the series Aşk-ı Memnu, she played the role of Peyker. She is also known for her role as Sedef, the jealous wife in the series European Side.